public enum CatLexica {

    NUM,
    ID,
    PAP {

        @Override
        public String toString() {
            return "(";
        }
    }, PCIERRE {

        @Override
        public String toString() {
            return ")";
        }
    }, PYCOMA {

        @Override
        public String toString() {
            return ";";
        }
    }, SEP {

        @Override
        public String toString() {
            return "&";
        }
    }, SUMA {

        @Override
        public String toString() {
            return "+";
        }
    }, MUL {

        @Override
        public String toString() {
            return "*";
        }
    }, IGUAL {

        @Override
        public String toString() {
            return "=";
        }
    },EOF
};
